Pressing machine



May 24, 1932.

E.` DAvls PRESSING MACHINE Filed Au'g. 21, 1928 3 Sheets-Sheet l n0 l n 5 FT. I

.f1 11.11.1111.'. .'prlhunn"....11..1'1"- INVENTOR.

A TT ORNE Y May 24, 1932. E. DAVIS PREssING. MACH-INE 3 Sheets-Sheet 2 Filed Aug. 21, 1928 INVENToR.

ATTORNEY.

Patented May 24, 1932 UNITED STATES PATENT oFFlcs ERNEST ADAVIS, F SYRACUSE, NEW YORK, ASSIGNOR T0 THE PROSPERITY'COMPANY INC., OF SYRACUSE, NEW YORK, A CORPORATION OFNEW YORK PBESSING MACHIN 'Application mea August 21,1323. serial No. 301,005..

This invention relates t-oQpressing-ma- I chines, as garment and laundry pressing machines, and has for its objectra particularly' simple eiicient and compact actuating mechanism by which the press is closed and heavy pressure is applied with minimum expenditure of power 'and also a particularly simple and efcient mechanism by which the pres,.

sure delivered by the machine, when closed, can be instantly adjusted to suit the conditions and it further has for its object aparticularly simple and efiicient mechanism by which the control of the lpressure adjusting ing means.

means is dependent upon the operation of the operator-operated members which control` the closing of the press:

tures and in the combinations and construc tions hereinafter set forth and claimed. f

had to the accompanying drawings in which like :haracters represent corresponding parts iu all the views. Y

Figure 1 is a side elevation, partly in .section, of a machine embodying 'my inventlon. Figure 2 is a fragmentary plan view of the parts seen in Figure 1.

Figure 3 is a partly diagrammatic view illustrating the operation of the actuating mechanism and the controls therefor and for the pressure adjusting means.

Figure 4 is an enlarged sectional view through the pressure adjusting means.

Figure 5 is a detail view of the carrier for The invention conslsts 1n the novel fea-- In describing this inventionl reference is` ally, cooperating pressingv elements, one of which is movable toward and fromthe other,

transmitting'member and a motor or power means connected to sald member, and pressure adjustlng means, the motion transmit- ,ting member acting or thrusting in opposite directions on themovable element and on the pressure'adjusting means during the "closing of the press. Preferably there is an interlo'ck between themanual means which con- `mechanism for actuating the movable ele- -l ment, this mechanism including a motion trol the operation of the motor to'close the press and the manual control by which the pressure of the pressure adiusting meansisin.-

creased at the will of the operator so that the pressure adjusting means can only be operated when the press is closed.

Some of the foregoing omitted.l

In the illustrated embodiment of the`invention, the cooperating pressingv elements are a buck 1 and a head 2 movable toward and from the buck, the buck 1 being mounted upon a bracket or goose neck 3 which is suplfeatures/may be f ported upon a base 4, the latter being hollow and housing the greater part of the actuating mechanism. i f

- The actuating mechanism comprises a lever 5 pivoted between its `ends at 6\to the base in the rear of the buck, this lever being usui ally termed a yoke lever and carrying the head 2 at its front end. In addition to the yoke lever, the actuating mechanism comprises a motion transmitting member 7, a fluid operated motor, as a cylinder 8, having a piston 9 movable therein and connections as a link or connecting rod 10 between the piston and the motion transmittingv mem- The motion transmitting member coacts directly with the rear arm ofthe lever 5, and these two parts 5 and 7 are provided with a coacting cam and follower so arranged as to close the press' 'during the movement of the member 7 in one direction, Iand to open the press during movement of the member 7 in the opposite direction, the cam extending in a general direction radially relatively to the axis of the lever 5.

The motion transmitting member 7 is here shown as a lever arranged beneath and exw tending at an angle'to the lever 5 and as pivoted at its lower end as hereinafter vset forth. The upper end of the lever 5 is pro- -vided witl afollower 11 movable along a cam slot 12 formed in the rear armv of'the yoke lever 5. A,The `yoke lever 5 is usually formed double with a cam slot in each side or branch thereof and the lever 7 extends be- .tween the branches of the` yoke lever and has followers llon opposite sides thereof movable inthe cam slots 12.

The lever 7` is also) formed with bifurcated arms 13 arranged at an angle thereto and the connecting rod is pivoted at 14 between said arms. The piston 9 is single acting.

The press is opened when'the pressure in the cylinder is released', by countersprings 15' connected at their front ends at 16 to the base 4 within the hollow cavity thereof and at their rear ends at 17 to brackets 18 projectingfrmthe lever 7. The cylinder 8 andv he springs 15 are arranged in horizontal position within the hollow ba'se so' that theA pressing machine is a unit which can vbe set upon a standard or a bench or 'any other support. This feature,

' however, in itself forms no part of this in vention.

The lever 7 is pivoted at its lower end to a carrier which is shiftable to adj ust .the pressurebetween the elements 1 and 2 or the pressure delivered by the head 2. The shifting of the carrier varies the initial' or starting position of the head 2 when in open position and also the shifting o f the carrier, when the press is'closed, applies-additional thrust or pressure to the lever' 7 which, acting in con-v i junction with the pressure on the piston 9, `increases or raises the pressure. delivered by the head 2.

The carrier 19 is here shown as a yoke pivoted at -20 to a block 21 within the base and carrying and eccentric pin or crack bearing 22 on which the lower end of the lever 7 is mounted and as `having arms 23' extending from-its axis, said arms being arranged at an acute angle to the arms of the yoke porj tion which carry thel crank bearing 22. lThe l two arms 23 coact with the pressure adjusting means to be presently described.

n the preferred form of my invention, the pressure adjusting means is fluid operated and consists of a 'pair of cylinders 24 for receiving a hydraulic fluidas oily and apiston 25 in each of the cylinders. Each piston has its rod 26 connected to one of the arms 23 of the carrier 19. Y

,During the movement of the pistons 9 on their out stroke, the thrust of the 'motion transmitting member or lever 7 is in opposite directions against the yokelever 5 and the vpipes 30 having check` valves 31 therein 'and in order to relievethe pressure in the cylinders 24, aby-pass 32 is provided around each `check valve, each by-pass having a normallyk closed manually operable valve 33 therein.

The means for adjusting the resisting pressure in the cylinder comprises a manually operable valve for controlling the iow of a Huid under pressure, as air, to the upper surface of the liquid within the reservoir 29 and preferably in order that the carrier 19 ,may be shiftedonly when the .press is closed, the manual controlfor the air'passing through the reservoir chamber 29 toboost the pressure therein is interlocked with a manual control for the cylinder 8.

` The Imanual control for the cylinder 8 comprises a valve casing .34, Figure 3, having a `spring pressed normally closed intake valve 35 and a normally open exhaust valve 36 therein, a manual'as a push button 37, the mo-4 tion of whichris transmitted through levers 38, 39 to the stem 40 of the exhaust valve. The intake andex-haust valves 35, 36 are connected'by a stem 41 so that they act as a unit. The exhaust yalve controls an exhaust passage 42. The intake end of the valve casing 34 is connected by a suitable pipe 44 to a supply tank. Y The yvalve casing is connected between its ends by a pipe 45 to a coupling 46 on the-cylinder and'eommunicating with ihe intake port 47 in the head of the cyliner. The machine here shown also includes a. dual manual control requiring both hands of the operator to be used to close the press, the

other manual operating a normally open exhaust valve.

48 designates the casing of said exhaus valve. 49 is the normally open exhaust valveI therein, which is operable by means, as a push button 50, similar to the push button 37 and levers 51, 52, similar tothe levers 38, 39. The valvecasing 48 is connected by a pipe 53 tothe coupling 46. Neither the lvalve construction nor the two hand control per se, forms part of this invention. v

Depression of the push buttons 37, 50 permits the air to flow from the supply pipe 44 through the valve casing 34, pipe 45 to the cylinder 8 to actuate thepis'ton- 9 therein on its power stroke. If the push button 50 is not depressed, the air will pass from the cou-` `pling 46 through the pipe 53, valve casing 48 las ' uncovered by the p1 cylinder back through the yvers39, 52 to i Lacasse Means, the construction of which forms no part'of this invention, are also provided for holding the valves in their operated position, this means beingl pressure operated and including diaphragm chambers 55, 56 having diaphragms 57, 58 therein respectively acting on sliding stems 59, 60 which act on the levers 39 and'52 respectively. The pressure sides of the diaphragm chambers are connected by pipes 61, 62 to a coupling 63 on the side of the cylinder, which coupling is connected by a pipe 64 to a coupling 65 having a port 66 opening into the cylinder' and arranged to be "ston when the piston is well on its out stroke. y

Obviously, whenl the port 66 is uncovered by the piston, the pressure will pass from the pipes 61, 62 to the diaphragm chambers, operating the dialphragms therein and hence acting on the lehold them and the valves operated thereby in their operated positions.

To open the press, the pressure in the diaphragm chambers is released sothat the valves are free to' return to their normal position and the air to exhaust ffrom the cylinder back through the port 47, pipes 45, 53.

The releasing means comprises a-valve casing 67 having a normally closed exhaust valve. 68 therein,- the casing being connected by a pipe 69 to any pipe connected to the diaphragm chambers here shown, as the pipe 61. The exhaust valve K68 is held closed by a spring 70 and is opened against the action of the spring by a trip lever.71 acting upon the stem of the exhaust valve 68.

' connected by a pipe 77 to any eating with the feedline 44 and vconnected. to the chamber 29 by a pipe 79 leading from` therein. for preventing The means for controlling the fiow of air to the pressure adjusting means or the reservoir chamber 29 thereof comprises a valve mechanism similar to that for controlling the flow of motive iiuid to and from the cylinder, that is, it comprisesa valve casing 72 'having-a spring pressed normally closed intake valve 73 therein and a normally open exhaust valve 74, these valves being connected together by a stem 75 and being operated bya push butt0n i f The intake end of the .valve casing 72 is pipe communithe valve casing 72 from between the ends thereof and opening into the top of the cham- .ber 29.l The pipe 79 has acheckV valve 80 the back flow of fluid from the chamber 29 whenth push button 76 is released. When the push button iserethat ther air Apressure may be applied, and hence the pressure boosted only 'when' the press is closed, an interlockv `is provided between the valves' operated by'th'e manuals or push buttons 37 or 50 andthe valves-operated by the push button 76 and this interlock 'port 66 to effect pipe 79 when the piston 8 j v7 endwise' against the rear leased, the valves 73 and 74 operated thereby j return to their normal position.v In order consists of connectingv the pipe 77 to one of the pipes which controls the holding of the valves operated by the push button 37, 50 in their operatedv position, the pipe 77 is connected to the pipe 62 leading to the diaphragm chamber 58, so that effective air pressure can not flow to the valve `casing72 even lthough the valve 73 is .open

until the diaphragms 57, 58 have been operated to lock thevalves 35, 40 and 49 in their operatedI position, this event not occurring until the press is closed.

' In order to automatically adjust the pressure, means is provided for transferring the pressure .from the cylinder 8 to the chamber or cylinder 29 under certain conditions, and as here illustrated, the cylinder 8 is connected to the cylinder or chamber 29 by a pipe 81 connected at one end tothe top of the chamber of cylinder 29, and at its other end to a coupling 82'on the cylinder 8, the coupling having a port opening intov the cylinder and located in position to be uncovered by the piston when the piston travels beyond its normall `power stroke', las when the adding set.- tles, or the' work being operatedion', is thinnerjthan the work previously operated on; In the normal operation, the piston 9 travelsin the cylinder 8 far enough to uncover the thelocking of the control valves, and stops on its power stroke between the' port`65 and coupling 82. If,` due to conditi ons, the piston 8 travels far enough to'uncover the port 1n the coupling 82, the pressure will be transferred from the cylinder 8 pressure if the operator has not previously boost/ed the pressure by depressingthe push button 76. ,j Thecheck valve,80 in the pipe 79 prevents the passage of air out through the travels far enough to uncover the port in the coupling 82. The

pipe 81 'and coupling 82 maybe omitted, or

the plpe 79 and associated valve mechanism operated by the push button 7 6,may be omitted, or both of these pressure adjusting means maybe .used in o ne machine as illustrated.

In operation, the. operator depresses both push buttons-37 and 50 to close the press and as the press comesinto closed position, the operator by looking at the gage 27 can determineiwhether the pressure is up to the point required., and if not. by merely pressing the push button 76 can boost'the pressure in the cylinder 24 causing itfto actuate the. carrier 19 about its pivot and hence', thrust the lever arm ofthe yoke 5 with increased pressure. In 4the event the operator does not keepthe pressure adjusted by depressing the push button 76, thepressure will be automatically adjusted when the y.pistonv 9 .travels far enough to uncover the port in the coupling 82.

As seen in Figure 6, the arm 23' of the-carrier may be adjusted to shift the carrier to inand as here shown,

4 tothe chamberof cylinder 29 and boost the creaseor decrease the pressure by means of 'a fthe second lever and the rea-r arm of the lever alo having coacting cam and followerelements arranged to effect the opening and closing of the press, la motor mounted within the base. beneath thel buck, connections between the motor and the second lever, and means for controlling the operation of the motor.

2. A pressing machine comprising cooperating pressing elements, one of which is movable Atoward and from the other, actuating mechanism for the movable element including two parts, one being a lever carrying the movable element and the second part coa'cting with the lever to move it, one of saidparts having a cam and the other a follower engaging the cam, the cam being lshaped to effect the opening and closing of the press, means connected to the said second i part for shifting the initial position of the same andthe initial position of said lever,

and an actuator connected to the second part.

3. A pressing machine including in combination cooperative pressing elements, one of which ismovable toward and from the other; actuating mechanism for the movable pressing'element including a lever carrying a movable element; a second lever arranged at an angle tothe first lever; a cam on one of said levers a cam follower on the other' of said levers coactingfwith the cam; a' shiftelo able pivotal connection for the sefcond lever; i

\,means for 'shifting said pivotal connection to vary the starting position of the second lever and thereby adjust the pressure between the elements; and an actuator con nected to the `second lever. i

4. A pressing machine including cooperating pressing elements, one of whichl is mov# able toward and from the other, actuating mechanism for the movable element includ- .,ing a lever carrying the movable element,

a second leverV arranged at an angle to the first lever, the levers engaging directly with eachother and having coacting means whereby movement ofthe second lever actuates the first'lever to open and closethe press, and an actuator connected to the second lever, a pivotal mounting for the second lever, and means for shifting said pivotal'mounting to adjust the pressure delivered by the movable element.

5. A pressing machine including cooperating pressing elements, one of which is movthe movable pressing element'.

thereby vary the pressure delivered ing a lever carrying the'movable element, a

second lever' arranged at an angle to the first lever, the levers coacting directly with each other and having coacting'means whereby movement of the second lever actuates the first lever to open and close the. press, an actuator connected to the second lever,'a carrier for the second lever, a pivotal connec tion between the Second lever and the carrier, and means for'shifting the carrier to shift the pivotal connection of the second lever and adjust the pressure delivered by j 6. A pressing machine including lcooperating pressing elements, one of which is movable toward and from the other, actuating mechanism for the movable element including a lever carrying the `movable element, a second lever arranged at an angle to the first lever, the levers having coacting means whereby movement of the second lever actuates the vfirst lever to open and close the press and an actuator connected to the second lever, a pivoted carrier for the second lever, the carrier being in the form of an angle lever to one arm of which the second leveris pivoted and means coacting with the other arm to move the carrier on its pivot "and by the movable pressing element.

7. A pressing'machine including in com.- bination cooperative pressing elements, one

of which is Amovable toward and from', the

other;a'ctuating mechanism for the movable pressing element including a motion transmitting. member; an actuator connected to said motion transmitting member; a. pivotally mounted carrier in the form of an an le lever, the motion transmitting member eing pivoted to one arm of the angle lever'and i tending to thrust the angle lever on its pivotalV mounting during the final closing of the press; pressure resisting means connected to 'the other arm" of the angle lever;v and means for shifting the position of the pressure resisting means.

8. A pressing machine including cooperative pressing elements, one of which is movable toward and from the other, actuating mechanism for the movable element including a' motion transmitting member, an actuator connected t said member, a carrier in the form' of an angle lever, the motion transmitting member being pivoted to one arm of the angle lever and tending to thrust the angle lever on its pivot during the final closing of the press, pressure resisting means connected to theother arm of the angle lever and manually controlled means for increasingl the pressure exerted by the pressure resisting means. f

9. A pressing machine including cooper.- ating pressing elements, one of which is movabletoward and fromythe other, actuating mechanism for the movable element including a motion transmitting member, a fluid operated motor, connections between the motor and the motion transmitting member, 'a

carrier for the 4motion transmitting member,

l the motion transmitting membertending to transmit motion in opposite directions to the v movable element and to the carrier during the closing of the press, iuid operated means for resisting the movement of ,the `carrier by the motion transmitting member and man- 4 vually controlled means for increasing the pressure of said 'fluid yoperating means to shift the carrier and thereby boost the pressure delivered by the movable element.

10. A pressing machine including cooperatingf'pressing elements, one of whichis movable toward and from the other, actuating mechanism for the movable element in- Y cluding a motion transmittin member, a fluid operated motor, connectlons between the-motor and the motion transmitting member, a carrier for the motion transmitting member, the motion transmitting -member tending to transmit motion in opposite directions to the movable element and to the carrier during the closing of the press, means for resisting the movement of the carrier by the motion transmitting member and manually controlled means forincreasing the pressure 'of the -resisting means to shift the earrier to boost the pressure delivered by rthe movable element, and connections controlled by the movement of themovable member of the Huid operated motor for controlling the flow of iiuid by said manually o erated means, and manual means for control ing the i flow offluid to and from the motor.

operating pressing elements, one of. which is movable toward and from the other, actuating mechanism for the movable element iiivcluding a motion transmitting member, an actuator connected to said member, a movable carrier 4for the motion transmitting member, the mot-ion'ft'ansmitting 4member acting to transmit motion in opposite directions to the movable element and to the carrier,x.

means connected to the carrier for resisting movement thereof by the motion transmitl ting member, said resisting means including l a cylinder having a piston thereinconnected to the carrier and manually operable means for controlling the fiow of iuid under pressure to said resisting means to actuate the piston in the cylinder and shift'the carrier.

12. A pressing machineJ including cooperating pressing elements, one of which is movable toward and from the other,- actuating mechanism for the movable element including a, motion transmitting member, a cylinder, a piston movable inthe cylinder 1l. A pressing machine including cog and connected to the motion transmitting transmitting member, the motion transmitting member'acting in opposite directions on p the pressing element and the carrier, pressure resisting means including a cylinder having a piston movable therein Vconnected to the carrier to resist movement thereof and also to move the carrier -relatively to the motion transmitting member, the first cylinder having a port arranged to be uncovered by the piston therein when it approaches the limit Verating pressing elements, one of which is movable toward and from the other, actuat` ing mechanism for the movable element including a motion transmitting member, a cylinder', a piston movable in the cylinder and connected to the 'motion transmitting mem- Y ber, a carrier for the motion transmitting of its out stroke, a pipe connecting the port member, the motion transmitting member acting in opposite directions on the movable pressing element and the carrier, pressure reslstmgmeans including a. cylinder having a piston movable therein connected to the carrier to resist movement thereof and also to Vshift the carrier relatively to the motion transmitting member, the first cylinder having `a port arranged to be uncovered by the piston therein when it approaches the limit of itsout stroke, a pipe connecting the port and the resisting means to boost the pressure in the cylinder ofthe resisting means, said pipe having a check valv'e therein, manually operated valves for controlling the flow 'of motive fluid to and from the first cylinder,` automatic pressure operated means for holding the valves intheir operated position when the press is closed, amanually 'operated valve for controlling the flow of` additional air to the resisting means, the last mentioned valve having a valve casing connected in multipleA with the pressure operated means Vfor holding the former valves in their operated posi-` tions.

14. A pressing machine including coopi.

, buck mounted on the base, a-hea the pressis closed by the operationof the manually operated means which controls the closing ofthe press.

15.` A- pressing machine includin a. base, a movable i toward and from the buck to close and open carrying the head, said lever being provided with a cam on the rear arm thereof at the the press, a lever carrying the head, said lever being pivoted between its ends to the base at the rear of the buck, actuating mechanism for the head including a motor and motion transmitting means connecting the motor with the head carrying lever in the rear of the buck,- power operatin means connected to the motion transmitting means for shifting a portion of the motion transmitting means to increasethe pressure between the pressing elements; and means for holding said portion of the motion transmitting means shifted so that the increased pressure will be applied upon subsequent closing operations o the press.

16. A pressing Vmachine comprising a fra-me, a buck mounted on the frame, a head movable toward and from the buck, a lever pivoted betweenv its ends to the frame and rear of the buck, a second leverpivoted to the frame and having a follower engaging with said` cam, means for actuating the second lever, and means for shifting the pivot of the second lever to increase the pressure transmitte'dl to the pressing elements upon actuation of the second lever.

In testimony' whereof, I have hereunto signed my name, at Syracuse, in the County of Onondaga, and in the State of New York,

this 17th day of Aug., 1928:

l ERNEST DAVIS. 

